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WASHINGTON - NASA has issued a request for proposals for Ares I mobile launcher construction. Ares I is the rocket that will transport the Orion crew exploration vehicle and its crew and cargo to low Earth orbit. The mobile launcher proposals are due to NASA's Kennedy Space Center in Florida on Sept. 6, 2007.

The request for proposals states the procurement approach for obtaining the mobile launcher system. The mobile launcher will be used as a platform to assemble, test and service Ares I in existing facilities, transport the rocket to the pad, and support launches.

The selected contractor will supply all labor, materials and equipment to build the mobile launcher structure and its associated facility systems. These systems include utilities, fire safety, communications, lighting, elevators and life support. The request for proposal includes an option for an additional Ares I mobile launcher.

The contract to build the Ares I mobile launcher will be awarded through a full and open competition and managed by Kennedy. A selection is expected in February 2008.